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Full text of "PORCELAIN OR EARTHENWARE STONE - United States Patent 659"

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Specification of Letters Patent No. 659, dated March 28, 1838.

To all whom it may concern:

Be it known that I, J. Smolinski, of the city of Philadelphia, in 
the State of Pennsylvania, have invented a new and Improved Mode 
of Constructing Stoves Made of Porcelain or other Kinds of 
Pottery, which stoves may be of various forms or sizes and may be 
used with fuel of various kinds, although more particularly 
adapted to such as are intended for the burning of anthracite or 
such other combustible as burns without smoke; and I do hereby 
declare that the following is a full and exact description 

Figure 1, in the accompanying drawing is a perspective view of 
one of my stoves, and Fig. 2, a horizontal section thereof, just 
above the grate which supports the fuel. In each figure like 
parts are designated by the same letters of reference.

A, A, is the body of the stove; B, the grate; C, C, C, the pipes, 
or tubes through which the draft is to pass; D, D, air tubes for 
heating air; a the top of the stove, b b, the ash drawer.

The body A, is to be made in separate pieces, not only to allow 
for expansion and contraction without danger of fracture, but 
more particularly with a view to the graduation of the thickness, 
so that the lower portion may bear the higher degree of heat, and 
the pressure to which it must be subjected, while the upper 
portions, or those more distant from the fire may be made with a 
corresponding diminution in their thickness, so as to allow of a 
more ready passage of heat through them. The lower part, for 
example, may be two inches, and the upper not more than a fourth 
of an inch, in thickness; by which means the temperature of the 
stove, in its various parts, may be nearly equalized, although 
exposed to very different degrees of heat.

The pipe C1, proceeds directly from the upper part of the fire 
chambers, and it afterward has such number of elbows, or turns, 
as will cause the draft to proceed alternately downward and 
upward, as shown by the direction of the arrows, until the 
products of combustion finally escape by the exit pipe, C2, the 
lower ends of the pipes being suitably connected, within the 
pedestal, for that purpose.

D, D, D, are pipes, or tubes, which are open at top, and at 
bottom, for the reception and discharge of air; the exterior of 
the body of the stove forms one side of said tubes, as shown in 
the drawing. They may terminate above the pedestal, and have 
their lower openings there, but it is best to carry them down to 
the bottom of the stove, through the pedestal, when a pedestal is 
employed. A gentle, but continuous circulation of air up these 
tubes, will be established whenever the stove is heated.

The tubes, or pipes, as well as the body of the stove, is to be 
made in separate pieces, properly grooved, or rebated, so that 
they may be perfectly united by means of a suitable cement, or 
mortar. The exterior is to be glazed, or otherwise ornamented, in 
any suitable manner.

I do not claim to be the inventor of stoves of porcelain, or 
other kinds of pottery, nor of the device for establishing an 
upward and downward draft, alternately, this having been 
frequently done in stoves formed of metal, but not, as I believe, 
in the manner herein set forth, in such as have been formed of 

I claim, as my invention,

1. The forming of the body of a stove of the kind herein 
described, of plates, or pieces of pottery of different 
thickness, duly graduated according to the pressure and 
temperature, as set forth.

2. I also claim the construction and use of the air tubes, marked 
D, D, made, and operating as above fully shown.


Witnesses: Thos. P. Jones, Henry Stone.